Adding and listing machine



ADDING AND LISTING MACHINE Original Filed 1 1925 6 Sheets-Sheet 1 INVENTOR GLENN d. BARRETT his ATTORNEYS June 30, 1931. G. J. BARRETT ADDING AND LISTING MACHINE Original Filed Aug. 14, 1925 6 Sheets-Sheet 2 S n w 3 INVENTOR GLENN d. BARRETT BY I W/QM

hi ATTORNEYS June 30, 1931. G. J. BARRETT ADDING AND LISTING MACHINE Original Filed Aug. 14, 1925 6 Sheets-Sheet 3 GLENN 'J. BARRETT BY 1. I QM his ATTQRNEYS June 30, 1931. G. J. BARRETT 1,812,130

ADDING AND LISTING MACHINE Original Filed Aug. 14, 1925 6 Sheets-Sheet 4 m INVENTOR GLENN d. BARRETT 2.5 his ATTORNEYS p J00 J 2 q 4 i 4 1.97

5 A an a J72 Z85;

June 30, 1931. G. J. BARRETT ADDING AND LISTING MACHINE 6 Sheets-Sheet 5 Original Filed Aug. 14 1925 INVENTOR GLENN u. BARRETT his ATTORNEYS June 30, 1931. G. J. BARRETT ADDING AND LISTING MACHINE Original Filed g- 1925 6 Sheets-Sheet 6 GLEN N d. BARRETT his ATTORNEY5 Patented June 30, 1931 UNITED STATES PATENT OFFICE GLENN J. BARRETT, O]? EVAN'S'I'ON, ILLINOIS, ASSIGNOR T PORTABLE ADDING MA- CHINE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF ILLINOIS ADDING am) msrmo MACHINE Original application filed August 14, 1925, Serial No. 50,219. Divided and this application filed January 18,

1930. Serial No. 421,738.

One object of the invention is to provide a simple and efficient calculating mechanism for key-set adding and listing machines.

Other objects of the invention are to provide a simple and compact calculating mechanism especially suitable for use in a small portable adding and listing machine; to provide a calculating mechanism wherein the transfer of tens from one decimal order unit to the next higher decimal order unit of the accumulator in adding is effected in an efficient manner by very simple means; to simplify the construction'by mounting on the main shaft of the machine the adding sectors, type segments, and a control ba'il therefor all for oscillatory movement about said shaft, and providing means for driving the hail from the shaft in timed relation to oscillatory movements of the shaft; to provide a restoring bail adapted to restore the active adding units on the return stroke of the handle for driving the accumulator wheels during adding operations, and to reset to normal position at the end of the forward stroke of the handle idle adding sectors that have moved to tens-transfer position during a previous adding operation, to thereby 'permit restoration of the transfer control devices to normal positionbefore the next adding action of the adding sectors on the accumulator wheels takes place; to provide means for insuring full throw of the control bail for the adding and printing sectors.

To the foregoing and other ends, which will hereinafter appear, the invention consists in the features of construction, arrangements of elements, and'combinations of parts specified in the appended claims.

The improvements in preferred form have been illustrated in connection with a portable key-set adding and listing machine more fully shown and described in my co-pending application, Serial No. 50,219, filed August 14, 1925, of which application the present application is a division. Only so much of the machine shown and described in said copending application as its necessary for a full understanding of the improvements claimed in the present application is shown and described herein.

In the appended drawings: I

Fig. 1 is a side elevation of the machine, with the outer casing removed, as viewed from the right hand side of the machine, the working parts standing in normal idle position;

Fig. 2 a side elevation of the machine, with the outer casing removed, as viewed from the left hand side of the machine, the working parts standing in normal idle position and certain of the parts being omitted;

Fig. 3 a fragmentary View showing the restoring bail operating means as viewed from the left hand side of the machine, the working parts being shown as positioned when the operating handle has moved slightly on its forward stroke;

Fig. 4 a view similar to Fig. 3, the working parts being shown as positioned when the operating handle has moved through about half of its forward stroke;

Fig. 5 a view similar to Fig. 3, the working parts being shown as positioned at the end of the forward stroke of the operating handle;

Fig. 6 a perspective view showing details of the restoring bail operating means;

Fig. 7 a transverse vertical sectional view on the line 7-7 of Fig. 9, substantially in the plane of the main shaft, parts of the mechanism being shown in front elevation;

Fig. v8 a perspective view showing a single accumulator-driving or adding unit and associated devices;

Fig. 9 a vertical longitudinal sectional view of the machine, with the working parts positioned as at the end of the forward stroke of the handle, and with the outer casing removed;

Fig. 9 a detail view of the locking bail for the key latch strips and the means for shifting said bail to release position;

Fig. 10 a front elevation of an accumulator unit and an adjacent accumulator driving unit;

Fig. 11 a detail view on the line 1111 of Fig. 10 with the accumulator wheel at zero; and

Fig.

showing 12 a view on the line 12-12 of Fig. 10, the parts in tens-transfer position.

This machine is rovided with a base plate 1 and two main rame side plates 5 and 6 suitably supported by the base plate. The

frame plates 5 and 6 support the entire mechchanism of the machine, except the ribbon mechanism, not shown, which 1n this machine is supported on the cover casing.

Accmnulat o rdm'oing units /The accumulator driving or adding units are rotatably mounted upon the main shaft ments 69) the types being fixed thereon inorder from- 0 to 9 from top to bottom and adapted to be printed from by movement of the platen against the typesegments, as

described in application, Serial Number- 50,219. The type'segments or driver elements 69 of the accumulator driving units' are provided with upwardly projecting stop lugs 71 normally engaged behind ears 7 2 bent laterally from the rear ends of the stop levers 37 to hold the ,0 types one space below the printing line of the machine. The arrangement is such that when keys 18 are set the cars 72- are lifted sufiicientlyto clear the ends of the stop lugs 71, thereby permitting rotation of theaccumulator driving units in counter-clockwise direction as viewed from the right when the handle 196 is .I'ockedforward. Thetype segments and adding "sectors are preferably mounted in condensed form, that is so that the spacing of the segments corresponds to the spacing of the digits of the printed numbers and, since the decimal order rows of keys 18 are spaced farther apart than is required for the type segments,

. the rear ends of the'stop levers '37 are bent inward to bring the ears 72 thereof into cooperative relation with the accumulator driving unit stop lugs71. The driver element type segments 69 are secured to hubs 73 which are formed with pulley grooves, for driving springs 74 which pass over the hubs and areattached to pins 75 secured to the respective driving elements 69. The opposite ends of the springs 74 are carried forward and anchored in holes 76in a cross-bar 77 extending between the side plates 5 and 6 and supported thereby. It will be .seen that by this arrangement the driving elements 69 of the adding or accumulator driving units are urged: in counter-clockwise I direction as viewed -from the right by the action of the springs 74, but are normally prevented from such movement by stop levers 37 and a restoring bail 294 hereinafter described. The desired driving elements 69 may be freed for such movement upon rearward swinging of bail 294 by the depression of the keys in the keyboard which would lift the sto levers 37 associated with key rows in whic keys are depressed. 1

The hubs 73 of the driving elements 69 ex -'tend a short distance on the right hand side of the latter to form bearing bosses 78 upon which adding sectors 79 are rotatably mounted. The adding sectors are preferably spaced slightly. from their associated driver-type segments 69 by annular beads, and are provided with elongated slots 80 through which headed rivets' 81 on the segments or driving elements extend, thereby securing the adding sectors to the respective driving elements for independent rotation to the extent of one unit space. The driving elements 69and the adding sectors 79 are resiliently connected together by springs-82, the arrangement being such that the springs 82 are adapted to move the adding sectors in one direction for transfer of the tens or the se 'ments in the opposite direction to position F type at the printing line, as more fully described hereinafter.

The movements of the adding or accumulator driving units, after the stoplevers 37 have been lifted by setting keys representing the number to be added, are adapted to be determined by the tail stops ofthe set numeral keys. For this purpose the adding sectors 79 are provided with pivot studs 83 to which links 84 are pivotally connected by bolts 85 with stop slides 86 each of which is provided with eight stop ears or lugs 87 and two stop shoulders and 96 adapted to engage the tail stops of the keys 18. It has been previously pointed out that the accumulator driving units are mounted in condensed form, corresponding to the spacing required between the type segments and,- therefore, the links 84 are bent or fan outwardly from their connections to adding sectors at their rear ends to their connections with the stop slides 86 which correspond with the spacing between rowsof keys. The stop slides'86 are provided with'elongated slots at 88 and 89 cooperating withannular grooves 90 in transversely extending rods 91 supported in the frame plates 5 and 6, the arrangement being such that the stop slides 86 are held in proper spaced relation and are freely slidable for differential positioning of the respective adding units according to anumber set up on the keyboard. A- transverse rod 91 is supported in the frame plates 5 and 6 forwardly of the forward ends of the stop slides 86.

This rod 91' serves as an abutment for the slides and, prevents their being accidentally moved forward far enough to disengagethe slots 88 and 89 from the rods 91.

Accumulator unit The adding sectors 79, which are adapted to V cooperate with the pinion elements 108' of the accumulator or register wheels, are provided with segmental gear racks 107 formed concentrically with the main shaft 68 and normally in mesh with the teeth of the register wheel pinions 108 rotatably mounted on a transverse rod or shaft 109, the ends of which are supported in the side bars 110 of the accumulator unit rocking frame. I The accumulator or register wheels comprise hubs 111 upon which the pinions 108 are mounted, the pinions being flanked on each side "by outwardly flaring cupped disks 112 which are adapted to maintain registration between the thin'shee't metal adding sector racks 107 and the respective register wheel pinions 108. On

the left hand side faces ofthehubs 111 there are preferably mounted rings 113, carrying single teeth 114 forming the triggers for operating the carrying pawls in the transfer of the tens. The triggers 114 are preferably slanting on one face and straight on the other and adapted to cooperate with ratchet toothlike noses 115 at the forward ends of carrying levers 116, which in my improvement are pivotally mounted on a transverse shaft 117 supported in the side bars 110 of the accumulator unit rocking frame, and therefore are movable bodily with the register wheels when the latter are moved out of and into engaigement with the adding sector racks 107 by the control mechanism described in the said application, Serial Number 50,219. The rear ends 118 of the carrying levers are preferably 'provided with laterally extending ears 119 adapted to cooperate with forwardly projecting detent fingers 120 formed on the lower extremities of the respective adding sectors to control the transfer of the tens and normally adapted to arrest the return movement of the adding sectors shortly before the bail 294 completes the return movement of the type segments to tension transfer springs 82 and effect one space relative movement between the type segments and adding sectors which carries the zero types one space below the printing line. The accumulator unit rocking frame is mounted on a transverselyextending rock shaft 121, the ends of which are journalled in the main frame side plates 5 and 6. The accumulator unit is adapted to be rocked with the shaft 121, as hereinafter described, for moving the register wheel pinions 108 into and out of mesh with the adding sector racks 107. Preferably the rock shaft 121 is provided with a plurality of notches 122 extending transversely of the axle of the shaft, into which the respective detent fingers 120 of the adding sectors are adapted to project for cooperation with the ears 119 on the car-. p

rying levers. It will be seen that by this construction the engagement between the carrying-lever ears 119 and the detent fingers 120 are brought close to the axle of rotation of the accumulator unit, so that the slight rocking motion thereof, in moving the register wheels into and out of cooperative relation with the adding sectors, will not materially affect. the relation between the carrying lever ears 119 and the detent fingers 120 of the adding sectors.

The noses 115 of the carrying levers 116 are provided with cam bevel faces 123 for cooperation with the triggers 114 of the register wheels as the register Wheel pinions 108 are rotated during normal addition. Opposite the cam faces the tooth-like noses 115 of the carrying levers are straight,-that is substantially radial as to the register wheels, to to form detent latches for engaging correspondingly radial faces on the triggers 114 when the register wheels are rotated in the opposite direction to reset the accumulator to zero or take the total. It will be understood that when the register wheel pinions 108 are rotated more than nine (9) units in counter-clockwise direction as viewed from the right, on the return stroke of handle 196 during addition, the triggers 114 will engage the bevel faces 123 on the ends of the carrying levers 116 and move the latter, so that the opposite ends 118 thereof will be moved out of the field of the detent fingers 120 thereby permitting the respective adding sectors to move in clockwise direction as viewed from the right an additional unit space under the pull of the transfer springs 82 for the transfor of the tens. It will be apparent, however, that frequently the adding sectors, and hence the detent fingers, will not have returned to" normal position at the time the carrying levers 116 are tripped by the triggers 114, and, therefore, means must be provided for holding the carrying levers 116 in tripped position until the transfer of the tens takes place. For this purpose the carrying levers 116 are provided with depending arms 124 formed with laterally projecting ears 125 which are adapted to cooperate with depending latch lugs 126 on latch pawls, 127 pivotally mounted on a transverse shaft 128 supported in the side bars 110 of the accumulator rocking frame. Springs are required for restoring and resiliently holding the carrying levers 116 in position to be engaged by the trig gcrs 114, and preferably for this purpose double-acting sprlngs 129 are provided, which extend from holes 130' in the carrying levers 116 to pins 131 on the latch pawls 127, thereby also utilizing the springs for holding the latch pawls in engagement with the ears 125 when the carrying levers are displaced by the triggers.

After the transfer of the tens, which takes lace at the end of a return stroke of the handle 126, it is necessary to reset the carryinglevers 116 before the next return stroke of the handle, and this resetting is done during the forward stroke of the handle. As the accumulator rocking frame 110 is moved downward to disengage the register wheel pinions 108 from the adding sector racks 107, the forward ends 132 of the latchpawls 127 are adapted to engage a transversely disposed fixed rod 133 on the main frame to rock the latch pawls upward relatively to the accumulator rocking frame frornthe position shown in Fig. 12 to the position shown'in Fig. 9 and thereby release the transfer levers 116 and permit them to return to normal position by the pull of the springs 129 as indicated in Fig. 9,- provided the detent fingers 120 have been pushed back, as hereinafter described. When the register wheel pinions 108 are again moved into mesh with the adding sectors there will be no possibility of displacement of pinions by the carrying levers, for both move together with the rocking frame 110.

During the differential positioning 'movements of the adding sectors in accordance with the setting of the numeral keys, on the forward stroke of handle 196, the register wheel pinions 108 are moved out of mesh with the adding sectorracks 107 and therefore the register wheels, being freely rotat-.

able, are liable to become displaced. To obviate this, fixed detents 134 are preferably locatedbelow the register wheels for engaging between teeth of the register wheel pinions 108 when the latter are moved out of,

mesh with the adding sectors. The detents 134 are provided with tooth-like noses adapted to project upward between the guide disks 117 of theregister wheel pinions so as to properly align with and enter between teeth of the register wheel pinions 108. In order to limit the vibrating or rocking movement of the accumulator rocking frame 110 when accumulator rocking frame downward when "the register wheel plnions are wlthdrawn from the adding sectors. The side bars 110 of. the accumulator rocking frame are pref-' erably secured rigidly together by transverse s'tay rods 140, theends of which are riveted to the respective side bars 110, but the transverse rods 109, 117 and 128, supporting respectively the register wheels, the carrying levers and the latch pawls, aresecured in the rock frame.

' Gantrol mechanism The general operating handle 196, which is adapted to operate the machine for adding after numeral keys have been set in the key board, or to operate the machinefortaking' the end of the main shaft 68 bymeans of a screw 198 passing through a hole in the hub, the screw being threaded into the end of the main shaft 68. The right-hand end of the main shaft 68 has a hub 199 of a. cam disk 201seeured-thereto.by agpin 200, the outer end of the hub being cutaway'to form a tongue adapted to cooperate with a. trans verse slot on the handle hub 197 to ensure the-rotation of the shaft 68 whenthe handle 196 is operated. The cam disk 201 which oscillates with main shaft 68 is provided with an arcuate slot at 202, the ends of 'whichare adapted to cooperate with a laterally pro jecting stud 203 secured in the main frame side plate 5 to limit the forward and return throw of the handle. The peripheral edge -the total when desired, is preferably provided with a hub 197 removably attached to of the cam disk-201 is formedto provide a i cam edge portion 205 and .a dwell edge portion215 adaptedto cooperate with a friction roller 206 -to rock and hold down a rock arm.

209.- Roller 206 is mounted on the upperend of a lever 207 pivoted at 208 to the rock arm 209 which is secured to the end of the rock shaft 121 upon which the accumulator rocking frame 110 is mounted, as previously described. The forward end 210 of the rock arm 209 is provided with a laterally projecting stud or pin 211 extending inward through a slot 212 in the main frame side plate 5.

'The inner end of the stud 211 passes through a hole in the forward end of the right-hand side bar 110 of. the accumulator rocking fram'andis secured to said bar 110 by a.

nut 213, thereby tying the accumulator rocking frame to the rock arm 209 so that any movement of the latter will be transmitted to the rocking frame. A s ring 214 secured to the stud 211 and to the Xed rear transverse frame rod 91 is adapted to normally lift the accumulator rocking frame and hold the register wheel pinions 108-in mesh with the adding sector racks 107. I

By the construction just described,.it will.

be seen that during adding operations when the handle is drawn forward the cam edge friction roller 206 and move the rock arm 209 downward, and when the roller passes onto the dwell edge portion 215 of the'cam diskthe latter will maintain the register wheels out of mesh until the end of the forward stroke of the handle. The friction roller lever 207 is provided with a rearwardl projecting stop lug 216 engaging a pin 21 mounted on the rock arm 209,.and a. spring.

218, extending from the pin 217 to a pin 218 secured to the lever 207, is adapted to normal- 1y hold the friction roller lever in the position shown in Fig. 1, with the lug 216 in contactwith the pin 217. It will be seen, how- 1154 portion 205 of 0am disk 201 will engage the.

ever, that the line of thrust of the cam disk through the friction roller 206 and the pivot 208 of the lever 207 at the end of the forward stroke of the handle is such that, as soon as the cam disk 201 starts on its return movement as the operating handle starts back, the friction roller 206 will be pushed to the left beyond the line of thrust and, under the action of the spring 214, the accumulator rock frame will .be snapped back into normal position and the register pinions 108 will again mesh with the adding sector racks. Ordinarily the frictional engagement between the roller 206 and the dwell edge portion 215 of the cam disk is sufficient to ensure tripping of the lever 207 and moving the roller 206 beyond the line of thrust, but in order to make this action certain the dwell edge portion 215 is preferably provided with a notch 219 which will offer sufficient resistance to the friction roller to ensure carrying of the roller beyond the line of thrust to permit the restoration of the register wheels as previously described.

The cam disk 201 is cut away at its upper rear portion to provide a rearwardly proj ecting arm 220 normally above the main shaft and carrying a friction roller 221 adapted to engage the laterally projecting pin 51 on the trip lever 50 of bail 46, to rock the bail 44 and release the keys by forward movement of the latch strips 28. On the forward stroke of the handle the friction roller 221 will engage the pin 51 and trip the lever 50 of bail 46 without actuating the bail 44 to release the keys, but on the return stroke of the handle the pin 51 will be engaged by the roller 221 and the two bails 46 and 44 will be rocked forwardly together, and the bail 44 will release the set numeral keys. The roller 22 1 continuing on the return stroke will pass under the pin 51 to the position shown in Fig. 1 of the drawings, thereby permitting the restoration of the bails 44 and 46 under the action of the latch strip springs 43.

Thecam disk 201 is also utilized for oper ating the platen rocking frame for moving it toward and from the type segments for taking impressions from types aligned in the printing plane, as described in application, Serial Number 50,219.

The control mechanisms thus far described are located or operated from the right-hand side of the machine, and the control mechanism located on the left-hand side of the machine will be now described. As will be seen in Fig. 2, the left-hand end of the main shaft 68 is provided with a segmental cam plate 279 provided with a hub 280 secured tothe' shaft 68 by a. pin 281. The cam plate 279 V is provided with a cam slot 282 of irregular shape, extending from the outer periphery where it is provided with a dwell at 283, in-

ward toward the axis of the shaft 68 where it is provided with-a dwell 284. The cam slot 282is adapted to cooperate with a roller 285 mounted on the forward end of a crank arm 286 extending forward from a stub shaft 287. The latter is rotatably mounted in a bearing boss 288 (see Fig. 7) secured to and projecting inward from the main frame plate 6. The crank arm 286 is preferably provided with an inwardly projecting stud 289, indicated just below the roller in Fig. 7, which projects through an arcuate slot 290 in the frame side plate 6. A pair of connecting links 291 are pivotally connected at their forward ends with the end of the stud289, as indicated in Figs. 3 and 6, the links extending rearward from said stud and having their rear ends pivotally connectedto a stud 292 carried by and projecting from an arm 293 forming part of a universal restoring bail 294 for the accumulator driving units. The restoring bail 294 is rotatably mounted on the main shaft 68 and is normally located in front of the main shaft in position to cooperate with noses or stop edges 295 formed on the type segments 69 which, as previously pointed out, form the driver elements of the adding or accumulator actuating units. When the handle is operated the cam roller 285 will be moved upward toward the center of the shaft 68 by following the cam slot 282, as indicated in Figs. 3 to 5, thereby moving the universal restoring bail 294 counter-clockwise as viewed from the right-hand side of the machine. This will permit the adding sectors to move counter-clockwise as viewed from the right, differentially, according to the number set up on the keyboard, and when the handle returns the bail 294 will pick up the noses 295 of the type segments and restore the type segments to normal position against the actionof their springs 74 and restore the adding sectors through the movement of the type segments.

It will be understood that the throw of the universal bail 294 should be accurately determined, for, on the forward stroke of the handle, the bail should move far enough to permit the adding uni-t driving elements 69 to move the adding sectors 79 the full nine units or spaces and also, upon. its return movement, to bring the driving elements back far enough for key-actuated stop levers 37 to drop in behind the stop noses 71 with the cipher types one space below the printing line and tension the transfer springs 82. In

order to ensure accurate adjustment of the 1 positions of the bail 294, both ih its normal (return throw) position and at the end of its rearward throw, the two links 291 are preferably employed, which, in the present inone link 291 may be bent to determine the location of the universal bail 294 in its normal osition, and the other bent so as to determme the location of the bail at the end of its rearward throw. This is an important feature of my improvement, for it eliminates accurate manufacturing operations. An accurate limit for the rearward throw of the bail 294 is desirable, for the bail, which moves in arcuate' slots 79 back of the racks 107, is adapted to engage the adding sectors .79 at the bottom of these slots (Fig. 9) and restore them to normal position, if any of them have been moved forward, as indicated in Fig. 12, for transfen-of thetens. This accurate positioning of the addin sectors 79 is required in order to move the ngers 120 at the lower extremities thereof back far enou h to permit the ears 119 on the carrying evers 116 to drop down in front of the fingers when the carrying levers are released and restored to normal position, as indicated in Fig. 9.

In order to ensure the fullrearward throw of the bail 294, to move the adding sectors 79 the. full predetermined limit, as just described, it has been found desirable to provide a positive driving member moving with shaft 68 for moving the bail rearward slightly, if' necessary, at the end of the forward stroke of the handle. This driving member preferably comprises a thin sheet metal spiral finger 297 carried by a hub 298 which .15 secured, by means of a pin 299 (see' Fig. 7), to the main handle shaft- 68, the end of the finger 297 being ada ted, at the end of the forward stroke of the andle, to engage the stud 292 substantially as shown in Fig. 6 and positively move the bail 294 rearward the full limit required. The spiral arrangement ofthe finger 297 provides for a resilient engagement between the finger and-the stud 292 so as to avoid injury to the parts, particularly as a positive stop is providedfor limiting the rearward throwof the bail 294. This positive' etc for limiting the rearward throw ail.294 comprises a finger 300 extending radially (see'Fig. 6) ofan arm 301 rotatable with the bail upon the main shaft 68 and having its opposite end mounted upon the stud 292 previously referred to as extending laterally from the arm 293. of the bail' 294. In this manner the stop arm 300 is movable with the bail and is adapted to limit its movement on the forward stroke of the handle by engagin a fixed stay rod, .preferably the rcarmost o the rods 91 which, as

prevlously pointed out, support the stop slides 86 of the adding sectors (see Fig. 9).

The arm 301 is preferably bifurcated and piovided with a second radially projected ger 302 which carries the internally projecting stud or pin 63 (see-Fig. 6) adapted mgr to engage thedepending arm 62 of .a loc ment with the notches 59 inthe key bail '60, for holdmg the latter out of engage};

at'c

strips 28. It thus will be seen thatwhen the handle is operated on the forward stroke the pin 63 will move out of the field of the rock 'arm 62, thus permitting the locking bail 60 For'returning the general operating handle, the cam plate 27 9' is preferably provided H with a laterally projecting stud 308 (see Fi 2) ,to the outer end of which a cord or cabl e 309 is secured by meansof an anchor tip 310 pivotall held on the stud andsecuredto the end of t e cable, substantially as indicated in- Fig. 2. The cable extends toward the rear ofthe machine from stud 308 where it passes over a pulley 311 rotatably mounted on a' stud 312 projecting laterally from the main side frame plate '6. The cable extends forward from pulley 311 and is provided at its forward end with an anchor tip 313 which is secured to the rear end of a helical spring 314,

the front end of which is secured to a stud- 315 projecting laterally outward from themain frame side plate 6 near the front'end of the machine.

Operation Y printed on the list, the corresponding zero eys'should be depressed. Depression of a selected numeral key, in each selected decimal order or denominational key row will move the latch stripsj28-associated with said key rows forward until the latchhooks 29 engage over detents 30 of the depressed key stems by reason of partial return movement of the latch strips. Detents-3O prevent full return of the latch strips thereby holding the associated stop levers 37 out of the paths of the detent lugs 71 of the respective adding units,

said stop levers being lifted by forward mo'vement of the latch strips and hd'd in inoperative positionas long as the keys are locked down. p

After the number has been set up on the keyboard, as described, the handle 196 is drawn forward its full stroke, thereby rotating the main handle shaft 68 and the ciated control came. The first effect of drawing forward the handle, fonnormal addition,

is that the cam edge portion 205 of the cam disk 201 will ride over the friction roller 206 and move the accumulator rocking frameto its lowermost position in which register wheel pinions 108 are out of mesh with the adding sector racks 107. Thereafter the dwell edge portion 215 of the cam disk 201 rides over the roller 106 to hold the accumulator frame down throughout the rest of the forward stroke of the handle. Bail 294 begins to swing rearward, after the pinions 108 are demeshed, by reason of dwell 283 of cam disk 279 passing off roller 285 and roller 285 being drawn upward and rearward by the cam portion 282. The operating connection between roller 285 and bail 294 continues to drive the bail rearward until shortly be fore the end of the forward stroke of the handle when the roller enters the dwell portion 284 of the slot in cam disk 279 and ceases to drive the bail. The rearward movement of the bail permits the differential movement of the respective accumulator driving or adding units released by actuated stop levers 37 according to the keys depressed. In this movement of the active accumulator driving units under the pull of the driving springs 74, the stop slides 86 will move forward until the proper ones of the stops thereon engage the lower or tail ends of the cooperating set keys, to thereby position the type segments and adding sectors to correspond with the number set up in the keyboard. During this operation of bail 294 the driving springs 7 4 are operative to move all the. elements of the active adding units, and the transfer springs 82 are operative to cause a relative movement between the driving elements or type segments 69 and the adding sections 79 of the active units, to the extent of the unit space permitted by the pin-and-slot connections 80- 81. At the end of the forward stroke of handle 196, as shown in Fig. 9, the platen will be brought into printing engagement with types 70.

On the forward stroke of the handle the bail 294 is moved rearward, in timed relation with the handle movement as described, by means of the cam slot in the cam 279 on the left side of the machine, engaging the roller 285 as shown in Figs. 3 and 4 and moving the crank arm 286 upward and rearward. The arm 286, through the links 291, will rock the hail from the position indicated in Fig. 3 to that shown in Fig. 4 and, at the end of the forward stroke of the handle, the resilient finger 297 driven positively by shaft 68, by engaging the stud 292, will positively position the bail 294 at the limit of its rearward .novement, as determined by the engagement of the stop finger 300 with the rod 91. During the final rearward movement of the bail any of the adding sectors 79 that may have been left in theposition shown in Fig. 12 after transfer of the, tens on a preceding 0ptens.

eration of the machine will be moved counterclockwise viewed from the right, into normal position, as shown in Fig. 9, so that the ears 119 of the carrying levers 116 may drop down in front of the detent fingers 120, thus restoring the transfer mechanism for the next transfer of the tens.

After the handle 196 has been drawn forward its full stroke it is released and will be snapped back to normal position by spring 314. Upon the return stroke of the handle the cam disk 201 first moves the friction roller lever 207 over the left thereby permitting the accumulator rocking frame to snap back to normal position under the action of its lifting spring 214. This places the register wheel pinions 108 again in mesh with the adding sector racks 107 for accumulation of the set-up number into the total. The bail 294 remains idle during remeshing of the pinions and racks, by the return movement of the cam plate 279 from the position shown in Fig. 5 to that shown in Fig. 4, and will be restored to normal position as roller 285 passes over the active cam portion 284 of the slot in cam 279, thereby engaging noses 295 of the type segments 69 and restoring the active adding units to normal position, except in the rows where adding sectors are released for transfer of tens. In the latter rows the adding units will return to the position shown in Fig. 12. On the return stroke of the handle the roller 221 on the cam disk 201 will, near the end of the stroke, engage pin -51 and rock universal bail 44 forward to move l LB latch strips 28 and release any keys set in the keyboard.

The transfer of the tons on the return stroke of the handle is effected by the triggers 114 engaging the noses 115 of the carrying levers 116 to the left of the respective register wheels accumulating more than nine and moving them down to the position shown in Fig. 12, thereby lifting the ears 119 out of the field of'the corresponding detent fingers 120. If the adding unit to the left is in normal position, that is no number has been set up in that column of keys. the spring 82 will immediately move the adding sector 79 to the position shown in Fig. 12, thereby moving the corresponding register wheel an additional unit distance forthe transfer of the If, however, the corresponding addin unit has been advanced as indicated in Fig. 9, it will be necessary to hold the carrying lever 116 in its-actuated position until the corresponding adding unit has been returned to normal position, to thereby permit the add ing sector 7 9to assume the transfer position shown in Fig. 12. For this purpose the latch pawls 127 are provided for latching the carrying levers 116 in actuated position and will retain them in this position until the next forward operation of the handle. On the succeeding. forward operation of the handle .tors and the latches 127 will be lifted .to release the carrying levers, by engagement of substantially asshown in Fig. 9. I

What I claim is;

the latch pawls with the fixed bar or rod 133,

i 1. In a key-set adding machine, the combination with a transversely extending main shaft carrying'adding sectors and type segments; a universal bail rotatably mounted on said main shaft and normally holding said adding sectors and type se ments in normal position against rotation y their driving spring when released; a handle mounted on themain shaft; and means operated on the forward stroke of the handle to move the uni versal bail to free the adding sectors and type segments for movement by their driving springs, and operated 'on the return stroke of the handle to restore the sectors and se ments to normal position and to'place t e driving springs under tension.

2. In a key-set adding machine, the combination with a handle-operated main shaft carrying adding sectors and type segments; a universal bail rock frame rotatably mounted on said main shaft said bail in itsnormal at-rest position being adapted to engage said type segments and thereby hold the type segments and'adding sectors in their normal po- .sitons; a crank arm; means connecting said arm to the bail rock frame; a disc mounted on the main shaft and formed with a cam slot; means on the crank arm operating in said slot to swing the ball rock frame to free the type segments on the forward stroke of the handle and to restore the type segments and adding sectors to normal position on the return stroke'of the handle.

3. In a key-set adding machine, the combi-- nation with a handle-operated main shaft carrying adding sectors and type segments; a universal bail rock frame rotatably mountedon said main shaft said bail in its normal at-' rest position being adapted to engage said type segments and thereby hold said segments in their normal non-printing position; a. crank arm; means connecting said armto the bail rock frame; a disc mounted on the main shaft and formed with a cam slot; means on the'crank arm operating in said slot to swing the bail rock frame to free type segments and adding sectors on the forward stroke of the handle and to restore the type segments and adding sectors to'normal vposition on the return stroke of the handle; and a stop arm carried by the bail rock frame and adapted to engage a fixed stop for limitingthemovement of the said rock frame on stroke of the handle.

4. In a key-set adding machine, the combination withi a handle-opeated main shaft carryi ad in sectors an ty e segments;a univer lbail 510k frame rotatably mounted the forward on said main shaft said bail in its normal atrest position being adapted to engage stops on the type segments and thereb hold said type segments and associated ad ing sectors intheir normal positions; a crank arm; two parallel L shaped links connecting said arm to the bail rock frame, said links being pro- I vided with oppositely disposed elongated holesin the toe of the L cooperating with a pin connected to the rock frame; a disc mounted on the main shaft and formed with a cam slot; and means on the crankarm operating inv said slot to swing the bail rockframe to free the type segments and the addtion, tens transfer means 'for limiting the return movement of the adding sectors, means actuated by saidhandle shaft for moving said universal bail to free the type segments on'the forward stroke of the handle and to restore them to normal position on the return stroke of the handle, the adding sectors -being arrested by the tens transfer means before the type segments have'been fully restored to normal position.

6. In a key-set adding machine, the combination with a handle-operated main'shaft carrying adding sectors and type segments, oscillating means rotatably mounted on-said main shaft said means in their normal'at-rest position beingada-pted to engage stops on the type segments'and thereby hold said segments in their normal non-printing position,

BIL

carrying adding sectors and type segments,

a universal bail rock frame rotatably mounted on said main shaft said bail in its normal at-rest position being adapted to engage stops on the type segments and thereby hold said segments in their normal non-printing position, a crank arm, means connecting said arm to the bail rock frame, adisc mounted on the main shaft and formed with a cam slot, meanson'the crank arm operating in said slot to swing the bail rock, frame to free the type segments on the forward stroke of the handle and to restore them to normal posires tion on the return stroke of the handle, a stoparmcarriedbythebailrockframeand adapted to'e a fixed stop for the movement the bail on the forwastroke of the handle, a resilient finger rigidly secured to the main shaft and adapted to engage the bail rock frame at the end of the forward stroke of the handle to positively force the bail the required distance to reset the adding sectors at normal and to give full forward movement of the type segments.

8. In a ke -set adding machine, the combination wit a handle-operated main shaft carrying addin sectors and type segments,

stop levers for olding said type segments in normal non-printing 'tion, a universal bail rock frame rotata 1y mounted on said main shaft said bail in its normal at-rest position being adapted to engpge stops on the type segments and thereby old said segments in their normal nonrintin position, means actuated by said ban is sha or moving said universal bail to free the t as ments on the forward stroke of the an e,

andto restore them to normal position on the return stroke of the handle, means for looking all of the said stop levers at the beginnin of the forward stroke of the handle, an means carried by the bail rock frame for 3 releasin said stop lever locking means at the end of t 0 return stroke of the handle.

In testimony whereof I hereunto aflix my signature.

GLENN J. BARRETT. 

